package com.andr.view.activity;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.Build;
import android.provider.Settings;
import android.support.annotation.NonNull;
import android.support.v4.app.ActivityCompat;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;

import java.util.ArrayList;
import java.util.List;

public abstract class BasePermissionActivity extends AppCompatActivity
{
    private final String TAG = "MPermissions";
    private int REQUEST_CODE_PERMISSION = 0x00099;


    /**
     * 请求权限
     *
     * @param permissions 请求的权限
     * @param requestCode 请求权限的请求码
     */
    public void requestPermission(String[] permissions, int requestCode)
    {
        this.REQUEST_CODE_PERMISSION = requestCode;
        if (checkPermissions(permissions))
        {
            permissionSuccess(REQUEST_CODE_PERMISSION);
        } else
        {
            List<String> needPermissions = getDeniedPermissions(permissions);
            ActivityCompat.requestPermissions(this, needPermissions.toArray(new String[needPermissions.size()]), REQUEST_CODE_PERMISSION);
        }
    }

    /**
     * 检测所有的权限是否都已授权
     *
     * @param permissions
     * @return
     */
    private boolean checkPermissions(String[] permissions)
    {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M)
        {
            return true;
        }

        for (String permission : permissions)
        {
            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED)
            {
                return false;
            }
        }
        return true;
    }

    /**
     * 获取权限集中需要申请权限的列表
     *
     * @param permissions
     * @return
     */
    private List<String> getDeniedPermissions(String[] permissions)
    {
        List<String> needRequestPermissionList = new ArrayList<>();
        for (String permission : permissions)
        {
            if (ContextCompat.checkSelfPermission(this, permission) != PackageManager.PERMISSION_GRANTED || ActivityCompat.shouldShowRequestPermissionRationale(this, permission))
            {
                needRequestPermissionList.add(permission);
            }
        }
        return needRequestPermissionList;
    }

    /**
     * 系统请求权限回调
     *
     * @param requestCode
     * @param permissions
     * @param grantResults
     */
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults)
    {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if (requestCode == REQUEST_CODE_PERMISSION)
        {
            if (verifyPermissions(grantResults))
            {
                permissionSuccess(REQUEST_CODE_PERMISSION);
            } else
            {
                permissionFail(REQUEST_CODE_PERMISSION);
                showTipsDialog();
            }
        }
    }

    /**
     * 确认所有的权限是否都已授权
     *
     * @param grantResults
     * @return
     */
    private boolean verifyPermissions(int[] grantResults)
    {
        for (int grantResult : grantResults)
        {
            if (grantResult != PackageManager.PERMISSION_GRANTED)
            {
                return false;
            }
        }
        return true;
    }

    /**
     * 显示提示对话框
     */
    private void showTipsDialog()
    {
        new AlertDialog.Builder(this).setTitle("提示信息").setMessage("您已拒绝部分权限,如需正常使用程序功能,请前往设置-应用中开发相应权限!").setNegativeButton("取消", new DialogInterface.OnClickListener()
        {
            @Override
            public void onClick(DialogInterface dialog, int which)
            {
                BasePermissionActivity.this.finish();

            }
        }).setPositiveButton("去设置", new DialogInterface.OnClickListener()
        {
            @Override
            public void onClick(DialogInterface dialog, int which)
            {
                startAppSettings();
                BasePermissionActivity.this.finish();
            }
        }).show();
    }

    /**
     * 启动当前应用设置页面
     */
    private void startAppSettings()
    {
        Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS);
        intent.setData(Uri.parse("package:" + getPackageName()));
        startActivity(intent);
    }

    /**
     * 获取权限成功
     *
     * @param requestCode
     */
    public abstract void permissionSuccess(int requestCode);

    /**
     * 权限获取失败
     *
     * @param requestCode
     */
    public abstract void permissionFail(int requestCode);
}
